/**
 * @Description:
 * @author breeze
 * @date 2020/12/1
 * storage封装
*/
const STORAGE_KEY = "mall"
export default {
    setItem(key,value,module_name){
        if(module_name){
            let val = this.getItem(module_name)
            val[key] = value
            this.setItem(module_name,val)
        }else{
            let val = this.getStorage();
            val[key] = value;
            window.sessionStorage.setItem(STORAGE_KEY,JSON.stringify(val))
        }
    },
    getItem(key,module_name){
        if(module_name){
            let val = this.getItem(module_name)
            console.log(val)
            if(val) return val[key]
        }
        return this.getStorage()[key]
    },
    getStorage(){
        return JSON.parse(window.sessionStorage.getItem(STORAGE_KEY) || '{}')
    },
    clear(key,module_name){
        let val = this.getStorage()
        if(module_name){
            if(!val[module_name])return;
            delete val[module_name][key]
        }else {
            delete val[key]
        }
        window.sessionStorage.setItem(STORAGE_KEY,JSON.stringify(val))
    }
}
